std::lock_guard - Man Page

typedef _Mutex mutex_type

lock_guard (const lock_guard &)=delete
lock_guard (mutex_type &__m)
lock_guard (mutex_type &__m, adopt_lock_t) noexcept
lock_guard & operator= (const lock_guard &)=delete

class std::lock_guard< _Mutex >"A simple scoped lock type.

A lock_guard controls mutex ownership within a scope, releasing ownership in the destructor.

Since

C++11